Discharge nozzle



May 5, 1942. F. c. woELFER, JR

DISCHARGE NOZZLE .V v L Filed April 30, 1940 INVENTOR-` VWVJZAHORNEYS BYf Patented May 5, 1942 UNITED N STATES PATENT OFFICE DISCHARGE NozzLEFrank C. Woelfer, Jr., Cincinnati,` Ohio, assignor to The CincinnatiBall Crank Company, Cincinnati, Ohio, a corporation of Ohiov ApplicationApril 30, 1940, Serial No. 332,576 s claims. (c1. zel-47.3)

This invention `relates to nozzles for controlling the flow of grease orother uid substance to a point of use. More particularly the inventionrelates to improvements in the valve usually included in the nozzle.Those nozzles are adapted for use at the end of a hose line or deliveryconduit for controlling the supply of a fluid, such as grease, which isdelivered under high pressure.

In a nozzle of this type, it is important that the valve'operation beextremely sensitive and that it be possible to open and close the valvein rapid succession. Due to the fact that the grease is coming throughthe line under high pressure a great deal of grease can pass a givenpoint in a very short time. In order to make the valve operationsensitive, it is requisite that an adjusting means be included which maybe easily actuated and set to fine variations.

It has been the object of the present inventor to provide a nozzleincluding` a control valve which may be opened and then closed almostimmediately so that in the intervening fraction of time a controlledshort or volume of grease may be discharged. One embodiment of theinvention for making this possible may consist of a passage includingopposed seats closely spaced with the valve movable from one seat toanother. Fine adjustment is requisite since a slight variation of thespacing of the seats brings about a considerable change in volume. hasbeen another object here to provide a means for varying the spacing ofthe seats with very little trouble.

It has been a further object of the inventor to provide an operatingmechanism for the valve which mechanism is compact and readily adaptedfor combination with the valve and the opposed seats.

Other objects and certain advantages will be more fully apparent from adescription of the drawing in which:

Figure 1 is an external view of the improved nozzle.

Figure 2 is a sectional view taken longitudinally of the device showingall of the internal parts.

Referring to the drawing, the control apparatus is generally indicatedat 5 and its operating handle at 6. It is not believed necessary todescribe the fittings which flexibly couple the hose line 'I to thecontrol device. One of these fittings includes the coupling sleeve 8into which the extension 9 is screwed. The nipple I0, extending Vfromthe coupling, projects into the bore I I of the Therefore it extension 9and a gasket I2 seals the joint between the nipple and the extension.

The sleeve 9 carries an elongated tubular element I3 the outer end ofwhich constitutes a valve seat I4. l The outer end portion of thiselement I3 is of reduced diameter providing specilically a plain portionI5, and an enlarged screw threaded portion I6. The attached end of theelement` I3 Ais screwed into the extension 9. The body of the element isknurled as at I'I so that it may be conveniently held for adjustingpurposes. Means for seating the bell V valve I8 is contained in the boreI9 of the "element I3. A stem or plunger 28 is disposed loosely in thereduced bore I9 at the outerend of the eleme-nt I3. The head 2l of thisplunger is Adisposed in an enlarged bore portion 22 and is engaged by acoil spring 23 under compression between the head 2| and the base of thebore of the extension 9 into which the element I3 is screwed.

The other valve seat indicated at 25 is provided in a tubular element 28fitted over the plain endof the element I3 and sealed 'with respectthereto by means of a gasket 21. This seat element 26 is held betweenthe inner end of the bore 28 in a lever support element 29 and the outerface of a plug 30 screw threaded into the outer end of the bore 28. Theplug includes a nut portion 3|. A copper sealing gasket disc 26a isplaced between the element 26 and the inner end of the bore in which theelement fits.

The screw threaded portion of the element I3 is adjustably engaged intothe screw threaded inner bore 32 of the plug 38 and thus the spacing ofthe valve seats I4, 25 may be varied by moving the elements I3 and 29axially relatively. A locking nut 33 is provided on the screw threadedportion of the element I3 and is engaged against the plug when the seatsIR, 25 are properly spaced.

Normally the ball valve I8 is held against the outermost seat by meansof the plunger 2|. A valve actuating shuttle pin 34 is disposed in thebore of the element 29 beyond the valve I8. Its inner end engages theball valve and its outer end engages the adjustment screw 35 ci theoperating lever E. A packing gland 36 seals the joint between the pinand the element 29. The grease passageway precedes laterally from anenlarged bore portion 31 in the element 29 through a nipple 38 disposedthrough a slot 39 in the lever 6. The lever 6 is pivoted on the element29 on a pin 40 within the bifurcated end of the element 28. Theadjustment screw 35 is set in position normally where it permits thevalve to seat a lock nut 4l and holds it in position.

Now when the operator presses the longitudinally extended portion 42 ofthe handle 6 toward the body, the shuttle pin unseats the valve from theseat 25 and seats it against the seat I4. During the time it takes tomove the Valve from one seat to the other, grease passes through thepassage to the .point of use. If the valve is held at midway position, aconstant ow results.

Due to the high pressure at which the grease is put through the line, ashot of grease is procured by moving the handle quickly. No matter howrapidly the handle is: movedl grease will be,

discharged. Therefore control of the rvolume is through variation of thespacing of the seats.` This spacing can be minutely. adjusted byscrewing the element I3 into and out ofthe bushing or plug 30 and fixingit at the appropriate. position.v

Having described my invention, I claim:l

l. A discharge nozzle for use "at the end ofk a hose line, comprising; atubular element having a screw threaded extension and a plain extensionbeyond the screw threadedextension, the forward end ofthe plain portionproviding a valve seat, a tubular element screwed on said screw threadedextensiom a separate valve seat element xed in said last namedelement-,and providinga seat facing the iirstA named seat, a lock nut onaV screw threaded portion of the rst element for locking the velementsin xedposition with the valve seats Aspaced. appropriately, a ball valveheld againstone seat, leverage means pivoted on the second element, and,a shuttle pin engaging the ball valve and actuated by the lever formoving the ball valve from its normal seat to the other seat.

2. A discharge nozzle for use at the end of a hose line, comprising; atubular elementhaving a screw threaded extension, the forward end of theextension providing a valve seat,- a tubular element screwed on saidscrew threaded exten- SiQIi, a; seat in said last named element, facingthe first named seat, means for locking the eiements in xed positionwith the valve seats spaced appropriately, a ball valve disposed betweensaid seats, a spring pressed pin loosely disposed in the passageway inthe rst named element normally holding the valve against one seat,leverage means pivoted on said last named element, and a shuttle pinengaging the ball valve, and actuated by, the lever for moving the ballvalve from its normal seat to the other seat.

3. A discharge nozzle adapted to be used in a hose line, comprising atubular element having an extension thereon, the portion adjoining thebody of the tubular element being screw-threaded and the outer portionbeing plain, a second tubular elerlrlierligv avalve seat elementdisposed in said second tubular element, a screw-threaded plug engagedin the second tubular element for holding the valve seat element inposition therein, said screw-threaded plug screw-threaded uponthescrew-threadedfportion of the rst tubular element, the plain portion of'the first4 tubuia/r ele-ment extended into the valve seat element, theouter end`r of the plain portion constituting a valve seat,l said valveseat elementproviding. a valve. seat disposed .adjacent and spaced fromlsaid' rst-namedi valvev seat, .a valve disposed loosely betweensaidseats within the valve seat element, a pin rdisposedloosely in thebore of the` first tubular element, said pin` springurged for holdingthe valve'. againstthe seat of the valve seat element, a. shuttle ,pindisposed in the second.` tubular element in engagementV with the valve,alever for vactuating said shuttle pin for moving the valve fromV thevalve seat ofV the valve seat element. to position against the end ofthe plain portion1` and.' a; 100k" nut disposed on the screw-threaded.portion.y of the first tubular elementA fjorlocking, in adjustedposition on` the screw-threaded. portion of; the rst tubular element,the. assembly constituted by the second tubular element, thel plug, and`the valve seat elements;

FlEtANKl C. WOELFER, Ja.

